Guided wave propagation in plate having trussed structures
Guided wave method is one of the methods in Non-Destructive Testing (NDT) for crack detection. The Lamb wave is the common guided wave that is used for NDT. In this RESEARCH, the determination of the dispersion curves of plate having trussed structures could help to reduce the computational time for...
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2013
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my-utm-ep.781722018-07-25T08:19:05Z Guided wave propagation in plate having trussed structures 2013-01 Lee, Boon Shing TJ Mechanical engineering and machinery Guided wave method is one of the methods in Non-Destructive Testing (NDT) for crack detection. The Lamb wave is the common guided wave that is used for NDT. In this RESEARCH, the determination of the dispersion curves of plate having trussed structures could help to reduce the computational time for simulating solid plate. Hence, here the connections of the solid plate to the plate having trussed structures are studied and the possibilities of simplification of the solid plate using the plate having trussed structures are looked into. The Finite Element Method (FEM) is used to simulate the structures proposed and by using Matlab, the space time domain displacement data are transformed into wave number-frequency domain, which is the dispersion curve, by using 2-Dimensional Fast Fourier Transform (2D FFT). The finite element software package used is ABAQUS. The results obtained are compared to the analytical solution of an isotropic plate. It is found that the geometries that could best approximated an isotropic plate is the cross geometry. However, only the anti-symmetric mode curves for the cross geometry has a good correlation with the analytical solution. By simplifying the solid plate as plate having trussed structures, the simulation time can be reduced. 2013-01 Thesis http://eprints.utm.my/id/eprint/78172/ http://eprints.utm.my/id/eprint/78172/1/LeeBoonShingMFKM20131.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:79369 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering |
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Universiti Teknologi Malaysia |
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UTM Institutional Repository |
| language |
English |
| topic |
TJ Mechanical engineering and machinery |
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TJ Mechanical engineering and machinery Lee, Boon Shing Guided wave propagation in plate having trussed structures |
| description |
Guided wave method is one of the methods in Non-Destructive Testing (NDT) for crack detection. The Lamb wave is the common guided wave that is used for NDT. In this RESEARCH, the determination of the dispersion curves of plate having trussed structures could help to reduce the computational time for simulating solid plate. Hence, here the connections of the solid plate to the plate having trussed structures are studied and the possibilities of simplification of the solid plate using the plate having trussed structures are looked into. The Finite Element Method (FEM) is used to simulate the structures proposed and by using Matlab, the space time domain displacement data are transformed into wave number-frequency domain, which is the dispersion curve, by using 2-Dimensional Fast Fourier Transform (2D FFT). The finite element software package used is ABAQUS. The results obtained are compared to the analytical solution of an isotropic plate. It is found that the geometries that could best approximated an isotropic plate is the cross geometry. However, only the anti-symmetric mode curves for the cross geometry has a good correlation with the analytical solution. By simplifying the solid plate as plate having trussed structures, the simulation time can be reduced. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Lee, Boon Shing |
| author_facet |
Lee, Boon Shing |
| author_sort |
Lee, Boon Shing |
| title |
Guided wave propagation in plate having trussed structures |
| title_short |
Guided wave propagation in plate having trussed structures |
| title_full |
Guided wave propagation in plate having trussed structures |
| title_fullStr |
Guided wave propagation in plate having trussed structures |
| title_full_unstemmed |
Guided wave propagation in plate having trussed structures |
| title_sort |
guided wave propagation in plate having trussed structures |
| granting_institution |
Universiti Teknologi Malaysia, Faculty of Mechanical Engineering |
| granting_department |
Faculty of Mechanical Engineering |
| publishDate |
2013 |
| url |
http://eprints.utm.my/id/eprint/78172/1/LeeBoonShingMFKM20131.pdf |
| _version_ |
1747817924634083328 |